ref: 7138ee9632e711d1aad9400ed2c5df0e4bf90c72
dir: /view.c/
#include "quakedef.h"
#include "colormatrix.h"
/*
The view is allowed to move slightly from it's true position for bobbing,
but if it exceeds 8 pixels linear distance (spherical, not box), the list of
entities sent from the server may not include everything in the pvs, especially
when crossing a water boudnary.
*/
cvar_t v_scale = {"v_scale", "1", true};
static cvar_t scr_ofsx = {"scr_ofsx","0", false};
static cvar_t scr_ofsy = {"scr_ofsy","0", false};
static cvar_t scr_ofsz = {"scr_ofsz","0", false};
static cvar_t cl_rollspeed = {"cl_rollspeed", "200"};
static cvar_t cl_rollangle = {"cl_rollangle", "2.0"};
static cvar_t cl_bob = {"cl_bob","0.02", false};
static cvar_t cl_bobcycle = {"cl_bobcycle","0.6", false};
static cvar_t cl_bobup = {"cl_bobup","0.5", false};
static cvar_t v_kicktime = {"v_kicktime", "0.5", false};
static cvar_t v_kickroll = {"v_kickroll", "0.6", false};
static cvar_t v_kickpitch = {"v_kickpitch", "0.6", false};
static cvar_t v_iyaw_cycle = {"v_iyaw_cycle", "2", false};
static cvar_t v_iroll_cycle = {"v_iroll_cycle", "0.5", false};
static cvar_t v_ipitch_cycle = {"v_ipitch_cycle", "1", false};
static cvar_t v_iyaw_level = {"v_iyaw_level", "0.3", false};
static cvar_t v_iroll_level = {"v_iroll_level", "0.1", false};
static cvar_t v_ipitch_level = {"v_ipitch_level", "0.3", false};
static cvar_t v_idlescale = {"v_idlescale", "0", false};
static cvar_t crosshair = {"crosshair", "1", true};
static cvar_t crosshair_shape = {"crosshair_shape", "0", true};
static cvar_t cl_crossx = {"cl_crossx", "0", false};
static cvar_t cl_crossy = {"cl_crossy", "0", false};
static double v_dmg_time, v_dmg_roll, v_dmg_pitch;
static double v_step_time, v_step_z, v_step_oldz;
extern int in_forward, in_forward2, in_back;
/*
===============
V_CalcRoll
Used by view and sv_user
===============
*/
vec3_t forward, right, up;
float V_CalcRoll (vec3_t angles, vec3_t velocity)
{
float sign;
float side;
float value;
AngleVectors (angles, forward, right, up);
side = DotProduct (velocity, right);
sign = side < 0 ? -1 : 1;
side = fabs(side);
value = cl_rollangle.value;
//if (cl.inwater)
// value *= 6;
if (side < cl_rollspeed.value)
side = side * value / cl_rollspeed.value;
else
side = value;
return side*sign;
}
/*
===============
V_CalcBob
===============
*/
static float
V_CalcBob(void)
{
float bob;
float cycle;
cycle = cl.time - (int)(cl.time/cl_bobcycle.value)*cl_bobcycle.value;
cycle /= cl_bobcycle.value;
if (cycle < cl_bobup.value)
cycle = M_PI * cycle / cl_bobup.value;
else
cycle = M_PI + M_PI*(cycle-cl_bobup.value)/(1.0 - cl_bobup.value);
// bob is proportional to velocity in the xy plane
// (don't count Z, or jumping messes it up)
bob = sqrtf(cl.velocity[0]*cl.velocity[0] + cl.velocity[1]*cl.velocity[1]) * cl_bob.value;
//Con_Printf ("speed: %5.1f\n", Length(cl.velocity));
bob = bob*0.3 + bob*0.7*sinf(cycle);
if (bob > 4)
bob = 4;
else if (bob < -7)
bob = -7;
return bob;
}
//=============================================================================
static cvar_t v_centermove = {"v_centermove", "0.15", false};
static cvar_t v_centerspeed = {"v_centerspeed","500"};
void V_StartPitchDrift (void)
{
if (cl.laststop == cl.time)
{
return; // something else is keeping it from drifting
}
if (cl.nodrift || !cl.pitchvel)
{
cl.pitchvel = v_centerspeed.value;
cl.nodrift = false;
cl.driftmove = 0;
}
}
void V_StopPitchDrift (void)
{
cl.laststop = cl.time;
cl.nodrift = true;
cl.pitchvel = 0;
}
/*
===============
V_DriftPitch
Moves the client pitch angle towards cl.idealpitch sent by the server.
If the user is adjusting pitch manually, either with lookup/lookdown,
mlook and mouse, or klook and keyboard, pitch drifting is constantly stopped.
Drifting is enabled when the center view key is hit, mlook is released and
lookspring is non 0, or when
===============
*/
static void
V_DriftPitch(void)
{
float delta, move;
if (noclip_anglehack || !cl.onground || cls.demoplayback )
{
cl.driftmove = 0;
cl.pitchvel = 0;
return;
}
// don't count small mouse motion
if (cl.nodrift)
{
if ( fabs(cl.cmd.forwardmove) < cl_forwardspeed.value)
cl.driftmove = 0;
else
cl.driftmove += host_frametime;
if ( cl.driftmove > v_centermove.value)
{
V_StartPitchDrift ();
}
return;
}
delta = cl.idealpitch - cl.viewangles[PITCH];
if (!delta)
{
cl.pitchvel = 0;
return;
}
move = host_frametime * cl.pitchvel;
cl.pitchvel += host_frametime * v_centerspeed.value;
//Con_Printf ("move: %f (%f)\n", move, host_frametime);
if (delta > 0)
{
if (move > delta)
{
cl.pitchvel = 0;
move = delta;
}
cl.viewangles[PITCH] += move;
}
else if (delta < 0)
{
if (move > -delta)
{
cl.pitchvel = 0;
move = -delta;
}
cl.viewangles[PITCH] -= move;
}
}
/*
==============================================================================
PALETTE FLASHES
==============================================================================
*/
static cshift_t cshift_empty = { {130,80,50}, 0 };
static cshift_t cshift_water = { {130,80,50}, 128 };
static cshift_t cshift_slime = { {0,25,5}, 150 };
static cshift_t cshift_lava = { {255,80,0}, 150 };
/*
===============
V_ParseDamage
===============
*/
void V_ParseDamage (void)
{
int armor, blood;
vec3_t from;
vec3_t forward, right, up;
entity_t *ent;
float side;
float count;
armor = MSG_ReadByte ();
blood = MSG_ReadByte ();
MSG_ReadVec(cl.protocol, from);
count = blood*0.5 + armor*0.5;
if (count < 10)
count = 10;
cl.faceanimtime = cl.time + 0.2; // but sbar face into pain frame
cl.cshifts[CSHIFT_DAMAGE].percent += 3*count;
if (cl.cshifts[CSHIFT_DAMAGE].percent < 0)
cl.cshifts[CSHIFT_DAMAGE].percent = 0;
if (cl.cshifts[CSHIFT_DAMAGE].percent > 150)
cl.cshifts[CSHIFT_DAMAGE].percent = 150;
if (armor > blood)
{
cl.cshifts[CSHIFT_DAMAGE].destcolor[0] = 200;
cl.cshifts[CSHIFT_DAMAGE].destcolor[1] = 100;
cl.cshifts[CSHIFT_DAMAGE].destcolor[2] = 100;
}
else if (armor)
{
cl.cshifts[CSHIFT_DAMAGE].destcolor[0] = 220;
cl.cshifts[CSHIFT_DAMAGE].destcolor[1] = 50;
cl.cshifts[CSHIFT_DAMAGE].destcolor[2] = 50;
}
else
{
cl.cshifts[CSHIFT_DAMAGE].destcolor[0] = 255;
cl.cshifts[CSHIFT_DAMAGE].destcolor[1] = 0;
cl.cshifts[CSHIFT_DAMAGE].destcolor[2] = 0;
}
// calculate view angle kicks
ent = &cl_entities[cl.viewentity];
VectorSubtract (from, ent->origin, from);
VectorNormalize (from);
AngleVectors (ent->angles, forward, right, up);
side = DotProduct (from, right);
v_dmg_roll = count*side*v_kickroll.value;
side = DotProduct (from, forward);
v_dmg_pitch = count*side*v_kickpitch.value;
v_dmg_time = v_kicktime.value;
}
/*
==================
V_cshift_f
==================
*/
static void
V_cshift_f(void)
{
cshift_empty.destcolor[0] = atoi(Cmd_Argv(1));
cshift_empty.destcolor[1] = atoi(Cmd_Argv(2));
cshift_empty.destcolor[2] = atoi(Cmd_Argv(3));
cshift_empty.percent = atoi(Cmd_Argv(4));
}
/*
==================
V_BonusFlash_f
When you run over an item, the server sends this command
==================
*/
static void
V_BonusFlash_f(void)
{
cl.cshifts[CSHIFT_BONUS].destcolor[0] = 215;
cl.cshifts[CSHIFT_BONUS].destcolor[1] = 186;
cl.cshifts[CSHIFT_BONUS].destcolor[2] = 69;
cl.cshifts[CSHIFT_BONUS].percent = 50;
}
/*
=============
V_SetContentsColor
Underwater, lava, etc each has a color shift
=============
*/
void V_SetContentsColor (int contents)
{
switch (contents)
{
case CONTENTS_EMPTY:
case CONTENTS_SOLID:
cl.cshifts[CSHIFT_CONTENTS] = cshift_empty;
break;
case CONTENTS_LAVA:
cl.cshifts[CSHIFT_CONTENTS] = cshift_lava;
break;
case CONTENTS_SLIME:
cl.cshifts[CSHIFT_CONTENTS] = cshift_slime;
break;
default:
cl.cshifts[CSHIFT_CONTENTS] = cshift_water;
}
}
/*
=============
V_CalcPowerupCshift
=============
*/
static void
V_CalcPowerupCshift(void)
{
if (cl.items & IT_QUAD)
{
cl.cshifts[CSHIFT_POWERUP].destcolor[0] = 0;
cl.cshifts[CSHIFT_POWERUP].destcolor[1] = 0;
cl.cshifts[CSHIFT_POWERUP].destcolor[2] = 255;
cl.cshifts[CSHIFT_POWERUP].percent = 30;
}
else if (cl.items & IT_SUIT)
{
cl.cshifts[CSHIFT_POWERUP].destcolor[0] = 0;
cl.cshifts[CSHIFT_POWERUP].destcolor[1] = 255;
cl.cshifts[CSHIFT_POWERUP].destcolor[2] = 0;
cl.cshifts[CSHIFT_POWERUP].percent = 20;
}
else if (cl.items & IT_INVISIBILITY)
{
cl.cshifts[CSHIFT_POWERUP].destcolor[0] = 100;
cl.cshifts[CSHIFT_POWERUP].destcolor[1] = 100;
cl.cshifts[CSHIFT_POWERUP].destcolor[2] = 100;
cl.cshifts[CSHIFT_POWERUP].percent = 100;
}
else if (cl.items & IT_INVULNERABILITY)
{
cl.cshifts[CSHIFT_POWERUP].destcolor[0] = 255;
cl.cshifts[CSHIFT_POWERUP].destcolor[1] = 255;
cl.cshifts[CSHIFT_POWERUP].destcolor[2] = 0;
cl.cshifts[CSHIFT_POWERUP].percent = 30;
}
else
cl.cshifts[CSHIFT_POWERUP].percent = 0;
}
/*
=============
V_UpdatePalette
=============
*/
void V_UpdatePalette (void)
{
int i, j;
V_CalcPowerupCshift ();
for (i=0 ; i<NUM_CSHIFTS ; i++)
{
if (cl.cshifts[i].percent != cl.prev_cshifts[i].percent)
{
cl.prev_cshifts[i].percent = cl.cshifts[i].percent;
}
for (j=0 ; j<3 ; j++)
if (cl.cshifts[i].destcolor[j] != cl.prev_cshifts[i].destcolor[j])
{
cl.prev_cshifts[i].destcolor[j] = cl.cshifts[i].destcolor[j];
}
}
// drop the damage value
cl.cshifts[CSHIFT_DAMAGE].percent -= host_frametime*150;
if (cl.cshifts[CSHIFT_DAMAGE].percent <= 0)
cl.cshifts[CSHIFT_DAMAGE].percent = 0;
// drop the bonus value
cl.cshifts[CSHIFT_BONUS].percent -= host_frametime*100;
if (cl.cshifts[CSHIFT_BONUS].percent <= 0)
cl.cshifts[CSHIFT_BONUS].percent = 0;
// FIXME(sigrid): 24-bit
}
/*
==============================================================================
VIEW RENDERING
==============================================================================
*/
static float
angledelta(float a)
{
a = anglemod(a);
if (a > 180)
a -= 360;
return a;
}
/*
==================
CalcGunAngle
==================
*/
static void
CalcGunAngle(void)
{
float yaw, pitch, move;
static float oldyaw = 0;
static float oldpitch = 0;
yaw = r_refdef.view.angles[YAW];
pitch = -r_refdef.view.angles[PITCH];
yaw = angledelta(yaw - r_refdef.view.angles[YAW]) * 0.4;
if (yaw > 10)
yaw = 10;
if (yaw < -10)
yaw = -10;
pitch = angledelta(-pitch - r_refdef.view.angles[PITCH]) * 0.4;
if (pitch > 10)
pitch = 10;
if (pitch < -10)
pitch = -10;
move = host_frametime*20;
if (yaw > oldyaw)
{
if (oldyaw + move < yaw)
yaw = oldyaw + move;
}
else
{
if (oldyaw - move > yaw)
yaw = oldyaw - move;
}
if (pitch > oldpitch)
{
if (oldpitch + move < pitch)
pitch = oldpitch + move;
}
else
{
if (oldpitch - move > pitch)
pitch = oldpitch - move;
}
oldyaw = yaw;
oldpitch = pitch;
cl.viewent.angles[YAW] = r_refdef.view.angles[YAW] + yaw;
cl.viewent.angles[PITCH] = - (r_refdef.view.angles[PITCH] + pitch);
cl.viewent.angles[ROLL] -= v_idlescale.value * sinf(cl.time*v_iroll_cycle.value) * v_iroll_level.value;
cl.viewent.angles[PITCH] -= v_idlescale.value * sinf(cl.time*v_ipitch_cycle.value) * v_ipitch_level.value;
cl.viewent.angles[YAW] -= v_idlescale.value * sinf(cl.time*v_iyaw_cycle.value) * v_iyaw_level.value;
}
/*
==============
V_BoundOffsets
==============
*/
static void
V_BoundOffsets(void)
{
entity_t *ent;
ent = &cl_entities[cl.viewentity];
// absolutely bound refresh reletive to entity clipping hull
// so the view can never be inside a solid wall
if (r_refdef.view.org[0] < ent->origin[0] - 14)
r_refdef.view.org[0] = ent->origin[0] - 14;
else if (r_refdef.view.org[0] > ent->origin[0] + 14)
r_refdef.view.org[0] = ent->origin[0] + 14;
if (r_refdef.view.org[1] < ent->origin[1] - 14)
r_refdef.view.org[1] = ent->origin[1] - 14;
else if (r_refdef.view.org[1] > ent->origin[1] + 14)
r_refdef.view.org[1] = ent->origin[1] + 14;
if (r_refdef.view.org[2] < ent->origin[2] - 22)
r_refdef.view.org[2] = ent->origin[2] - 22;
else if (r_refdef.view.org[2] > ent->origin[2] + 30)
r_refdef.view.org[2] = ent->origin[2] + 30;
}
/*
==============
V_AddIdle
Idle swaying
==============
*/
static void
V_AddIdle(void)
{
r_refdef.view.angles[ROLL] += v_idlescale.value * sinf(cl.time*v_iroll_cycle.value) * v_iroll_level.value;
r_refdef.view.angles[PITCH] += v_idlescale.value * sinf(cl.time*v_ipitch_cycle.value) * v_ipitch_level.value;
r_refdef.view.angles[YAW] += v_idlescale.value * sinf(cl.time*v_iyaw_cycle.value) * v_iyaw_level.value;
}
/*
==============
V_CalcViewRoll
Roll is induced by movement and damage
==============
*/
static void
V_CalcViewRoll(void)
{
float side;
side = V_CalcRoll (cl_entities[cl.viewentity].angles, cl.velocity);
r_refdef.view.angles[ROLL] += side;
if (v_dmg_time > 0)
{
r_refdef.view.angles[ROLL] += v_dmg_time/v_kicktime.value*v_dmg_roll;
r_refdef.view.angles[PITCH] += v_dmg_time/v_kicktime.value*v_dmg_pitch;
v_dmg_time -= host_frametime;
}
if (cl.stats[STAT_HEALTH] <= 0)
{
r_refdef.view.angles[ROLL] = 80; // dead view angle
return;
}
}
/*
==================
V_CalcIntermissionRefdef
==================
*/
static void
V_CalcIntermissionRefdef(void)
{
entity_t *ent, *view;
float old;
// ent is the player model (visible when out of body)
ent = &cl_entities[cl.viewentity];
// view is the weapon model (only visible from inside body)
view = &cl.viewent;
VectorCopy (ent->origin, r_refdef.view.org);
VectorCopy (ent->angles, r_refdef.view.angles);
view->model = nil;
// always idle in intermission
old = v_idlescale.value;
v_idlescale.value = 1;
V_AddIdle ();
v_idlescale.value = old;
}
/*
==================
V_CalcRefdef
==================
*/
static void
V_CalcRefdef(void)
{
entity_t *ent, *view;
int i;
vec3_t forward, right, up;
vec3_t angles;
float bob;
V_DriftPitch ();
// ent is the player model (visible when out of body)
ent = &cl_entities[cl.viewentity];
// view is the weapon model (only visible from inside body)
view = &cl.viewent;
// transform the view offset by the model's matrix to get the offset from
// model origin for the view
ent->angles[YAW] = cl.viewangles[YAW]; // the model should face
// the view dir
ent->angles[PITCH] = -cl.viewangles[PITCH]; // the model should face
// the view dir
bob = V_CalcBob ();
// refresh position
VectorCopy (ent->origin, r_refdef.view.org);
r_refdef.view.org[2] += cl.viewheight + bob;
// never let it sit exactly on a node line, because a water plane can
// dissapear when viewed with the eye exactly on it.
// the server protocol only specifies to 1/16 pixel, so add 1/32 in each axis
r_refdef.view.org[0] += 1.0/32;
r_refdef.view.org[1] += 1.0/32;
r_refdef.view.org[2] += 1.0/32;
VectorCopy (cl.viewangles, r_refdef.view.angles);
V_CalcViewRoll ();
V_AddIdle ();
// offsets
angles[PITCH] = -ent->angles[PITCH]; // because entity pitches are
// actually backward
angles[YAW] = ent->angles[YAW];
angles[ROLL] = ent->angles[ROLL];
AngleVectors (angles, forward, right, up);
for (i=0 ; i<3 ; i++)
r_refdef.view.org[i] += scr_ofsx.value*forward[i]
+ scr_ofsy.value*right[i]
+ scr_ofsz.value*up[i];
V_BoundOffsets ();
// set up gun position
VectorCopy (cl.viewangles, view->angles);
CalcGunAngle ();
VectorCopy (ent->origin, view->origin);
view->origin[2] += cl.viewheight;
for (i=0 ; i<3 ; i++)
{
view->origin[i] += forward[i]*bob*0.4;
//view->origin[i] += right[i]*bob*0.4;
//view->origin[i] += up[i]*bob*0.8;
}
view->origin[2] += bob;
// fudge position around to keep amount of weapon visible
// roughly equal with different FOV
/*
if (cl.model_precache[cl.stats[STAT_WEAPON]] && strcmp (cl.model_precache[cl.stats[STAT_WEAPON]]->name, "progs/v_shot2.mdl"))
*/
if (scr_viewsize.value == 110)
view->origin[2] += 1;
else if (scr_viewsize.value == 100)
view->origin[2] += 2;
view->model = cl.model_precache[cl.stats[STAT_WEAPON]];
view->frame = cl.stats[STAT_WEAPONFRAME];
view->colormap = vid.colormap;
// set up the refresh position
VectorAdd (r_refdef.view.angles, cl.punchangle, r_refdef.view.angles);
// smooth out stair step ups
if(!noclip_anglehack && cl.onground && ent->origin[2] - v_step_z > 0){
v_step_z = v_step_oldz + (cl.time - v_step_time) * 80.0;
if(v_step_z > ent->origin[2]){
v_step_z = v_step_oldz = ent->origin[2];
v_step_time = cl.time;
}
if(v_step_z < ent->origin[2]-12.0){
v_step_z = v_step_oldz = ent->origin[2] - 12.0;
v_step_time = cl.time;
}
r_refdef.view.org[2] += v_step_z - ent->origin[2];
view->origin[2] += v_step_z - ent->origin[2];
}else{
v_step_z = v_step_oldz = ent->origin[2];
v_step_time = cl.time;
}
if (chase_active.value)
Chase_Update ();
}
void
V_NewMap(void)
{
v_step_z = v_step_oldz = 0.0;
v_step_time = 0.0;
}
/*
==================
V_RenderView
The player's clipping box goes from (-16 -16 -24) to (16 16 32) from
the entity origin, so any view position inside that will be valid
==================
*/
extern vrect_t scr_vrect;
void V_RenderView (void)
{
if (con_forcedup)
return;
// don't allow cheats in multiplayer
if (cl.maxclients > 1)
{
setcvar ("scr_ofsx", "0");
setcvar ("scr_ofsy", "0");
setcvar ("scr_ofsz", "0");
}
if (cl.intermission)
{ // intermission / finale rendering
V_CalcIntermissionRefdef ();
}
else
{
if (!cl.paused /* && (sv.maxclients > 1 || key_dest == key_game) */ )
V_CalcRefdef ();
}
R_PushDlights ();
R_RenderView ();
if (crosshair.value)
Draw_Character(
scr_vrect.x + scr_vrect.width/2 + cl_crossx.value,
scr_vrect.y + scr_vrect.height/2 + cl_crossy.value,
crosshair_shape.value < 1 ? '+' : '\xf');
}
//============================================================================
static void
screenshot(void)
{
static char opath[48];
static int pathcnt = 2;
char path[48], *t;
FILE *f;
byte *b;
int n;
if((t = sys_timestamp()) == nil){
err:
Con_Printf("screenshot: %s\n", lerr());
return;
}
n = snprint(path, sizeof(path), "screenshots/%s.tga", t);
if(strncmp(opath, path, n-4) == 0)
snprint(path+n-4, sizeof(path)-(n-4), "x%d.tga", pathcnt++);
else
pathcnt = 2;
if((f = createfile(path)) == nil)
goto err;
if((n = TGA_Encode(&b, "qk1", vid.buffer, vid.width, vid.height)) > 0)
n = fwrite(b, n, 1, f);
free(b);
fclose(f);
if(n != 1){
removefile(path);
goto err;
}
strcpy(opath, path);
}
static void
v_scale_cb(cvar_t *var)
{
static float scale = 1.0;
var->value = clamp(var->value, 1, 16);
if(scale != var->value){
scale = var->value;
vid.resized = true;
}
}
/*
=============
V_Init
=============
*/
void V_Init (void)
{
cminit();
Cmd_AddCommand("v_cshift", V_cshift_f);
Cmd_AddCommand("bf", V_BonusFlash_f);
Cmd_AddCommand("centerview", V_StartPitchDrift);
Cmd_AddCommand("screenshot", screenshot);
Cvar_RegisterVariable(&v_scale);
v_scale.cb = v_scale_cb;
Cvar_RegisterVariable (&v_centermove);
Cvar_RegisterVariable (&v_centerspeed);
Cvar_RegisterVariable (&v_iyaw_cycle);
Cvar_RegisterVariable (&v_iroll_cycle);
Cvar_RegisterVariable (&v_ipitch_cycle);
Cvar_RegisterVariable (&v_iyaw_level);
Cvar_RegisterVariable (&v_iroll_level);
Cvar_RegisterVariable (&v_ipitch_level);
Cvar_RegisterVariable (&v_idlescale);
Cvar_RegisterVariable (&crosshair);
Cvar_RegisterVariable (&crosshair_shape);
Cvar_RegisterVariable (&cl_crossx);
Cvar_RegisterVariable (&cl_crossy);
Cvar_RegisterVariable (&scr_ofsx);
Cvar_RegisterVariable (&scr_ofsy);
Cvar_RegisterVariable (&scr_ofsz);
Cvar_RegisterVariable (&cl_rollspeed);
Cvar_RegisterVariable (&cl_rollangle);
Cvar_RegisterVariable (&cl_bob);
Cvar_RegisterVariable (&cl_bobcycle);
Cvar_RegisterVariable (&cl_bobup);
Cvar_RegisterVariable (&v_kicktime);
Cvar_RegisterVariable (&v_kickroll);
Cvar_RegisterVariable (&v_kickpitch);
}